Saw this. Appears with the New stock and modules, the new rifle could go AR, AI, Mini30, or rotary mags.... Maybe.
https://ruger.com/micros/newProducts/?r=yRuger American Rifle® with New Modular Stock
The new Ruger American Rifle® models feature a new modular stock that accepts alternative mag wells for use with non-Ruger American Rifle rotary magazines. Depending on caliber, these new stocks will allow for the use of AI-Style, AR-Style, Mini Thirty® or Ruger American Rifle® magazines (short-action, long-action or magnum). LEARN